/*
 * Webcam.h
 * libwindowswebcam
 *
 * Copyright (c) 2010 Julius Parishy <juliusparishy@gmail.com>
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#ifndef LIBWINDOWSWEBCAM_WEBCAM_H
#define LIBWINDOWSWEBCAM_WEBCAM_H

#include <string>
#include <vector>

struct WebcamDevice
{
	std::string name;
	std::string description;
};

struct WebcamMediaType
{
	enum PixelFormat
	{
		Rgb32 = 0,
	};

	PixelFormat format;

	int width;
	int height;
};

struct WebcamFrame
{
	WebcamMediaType mediaType;
	unsigned char* data;
};

class Webcam
{
public:
	Webcam();
	~Webcam();

	bool setup(const WebcamDevice& device);

	bool start();
	void stop();

	const WebcamFrame* currentFrame() const;

	static bool listDevices(std::vector<WebcamDevice>& outDevices);

	void setPreferredSize(int width, int height);

	int preferredWidth() const;
	int preferredHeight() const;

private:
	class WebcamImpl;
	WebcamImpl* m_impl;

	int m_preferredWidth;
	int m_preferredHeight;

	friend class CustomRenderer;

	WebcamFrame* m_currentFrame;
	void setCurrentFrame(WebcamFrame* currentFrame);

	WebcamDevice m_device;
	bool setDevice(const WebcamDevice& device);
};

#endif
